Exercise device



FIG. 1 is a perspective view of the exercise device showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is rear view thereof.

The broken lines shown in the drawings illustrate portions of the exercise device that form no part of the claimed design. The surface shading illustrated in the drawings is provided merely to highlight the contour of the design; it is not intended to be illustrative of texture or gloss. 

CLAIM The ornamental design for an exercise device, as shown and described. 